- Category: Water Feature
- Type: Island
- Latitude/Longitude: 53°13'29"N 4°31'31"W
- Eastings/Northings: 231514, 372728
- OS Grid: SH315727
- Mapcode Local: GBR 55.0Z1N
- Mapcode Global: WH42X.G69M
Location and coordinates are for the approximate centre of Creigiau'r Odyn within this administrative area.
Geographic features and populated places may cross administrative borders.